REPAIR / MAINT OF DISTRIBUTION TRANSFORMER AND CONNECTED WORKS AT MIL STN KOTA

Disconnecting defective outdoor/ indoor distribution transformer of various size from HT/LT sites and taking out complete transformer oil, storing the same in suitable containers ( to be arranged by contractor ) opening the top cover, lifting up the core assembly carefully to check the condition of transformer winding core retanking the same after repair refilling the transformer oil after dehydration and filteration (dehydration and filteration to be paid separately) inluding checking of leakage of transformer body and welding works required for making transformer body leak proof transportation of transformer to and fro from site to work shop and re-installation the same at any site as directed by Engr-in- charge for capacity of transformer 50 KVA to 200 KVA.

Description all as per srl item No -1 here in before but of capacity 250 KVA and upto 500 KVA. Note for srl item No 1&2:- (i) The other materials required for rectification of defects such as transformer oil, bushes, bush rod etc. shall be measured and paid separately under respective item of this sch.

Replacement of burnt /defective HT & LT copper coil with new made out of super enamelled high quality copper wires of matching size to the existing one and as directed by engr in charge.

M&L for Replacement of existing defective HT tap changer of suitable size with tapping arrangement 2.5% to 7.5% and one normal tapping including connecting up with HT coil and testing of transformer 11/0.415 kV capacity up to 500 KVA.

M&L for servicing/ over hauling including greasing of HT Tap chnager and with tapping arrangement 2.5% to 7.5% and one normal tapping including connecting up with HT coil and testing of transformer capacity up to 500 KVA.

Replacement of existing defective drain out oil outlet valve of any type & size suitable for outdoor/ indoor transformer type of all as directed at site by Eng-in-charge.

Replacement of synthetic rubberised cork sheet gasket 1/4" thick suitablefor main body top cover of transformer. Capacity up to 500 KVA.

Replacement of transparent type silica gel breather assy of suitable size of transformer capacity upto 500 KVA connected to air column with conservator tank.

Supply and fixing in replacement transformer oil temperature gauge 0 - 100 graduated Analogue dial type.

Dismantling and opening transformer tank cover removing of worn out transformer oil tank gasket and supply, fixing of new rubberised gasket sheet 6.0 mm thick and to be pasted using gasket adhesive for the following transformer including refixing the top cover with conservator tankfor transformer capacity up to 200 KVA.